#include <iostream> using namespace std; int main (){ int a,b,c,d; a=5; b=8; c=12; d=39; printf("%.3lf\n",(a+b+c)/3.0); cout<<d/a<<" "<<d%a<<endl; cout<<d/b<<" "<<d%b<<endl; cout<<d/c<<" "<<d%c; return 0; }